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  <title>Document</title>
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    body, ul{
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    body{
      background-image: url(../images/grid.png);
    }
    svg{
      background-color: rgba(255, 0, 0, 0.1);
    }
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  <svg width="300" height="300" xmlns="http://www.w3.org/2000/svg" >
    <rect id="rectangle" x="0" y="0" width="100" height="50" fill="red"></rect>
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      // selector( document.querySelectorAll() ) | domEL
      gsap.to('#rectangle', {
        x: 200,
        duration: 2 // 秒
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